package com.example.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.example.reggie.common.R;
import com.example.reggie.entity.Employee;
import com.example.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登入功能
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //1. 将页面提交的密码进行md5加密处理
        String password = DigestUtils.md5DigestAsHex(employee.getPassword().getBytes());

        //2.查询用户是否存在
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();
        lqw.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(lqw);
        if (emp == null){
            return R.error("用户不存在");
        }

        //3. 用户存在，进行密码比对
        if (!emp.getPassword().equals(password)){
            return R.error("密码错误");
        }

        //4. 查看员工状态，如果位禁用状态，则返回禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //5. 登入成功，将员工id存入session并返回登入成功结果
        request.getSession().setAttribute("employee", emp.getId());
        log.info("员工登入。。。");
        return R.success(emp);
    }

    /**
     * 员工退出功能
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        request.getSession().removeAttribute("employee");
        log.info("员工退出。。。");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee){
        log.info("新增员工信息：{}", employee.toString());
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
        //设置初始密码，进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //获取当前登入用户id
        long empId = (long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);
        //添加员工
        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 分页功能
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(Integer page, Integer pageSize, String name){
        log.info("page={}，pageSize={}, name={}", page, pageSize, name);
        //构建分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();
        //添加过滤条件
        lqw.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        lqw.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo, lqw);

        return R.success(pageInfo);
    }
    /**
     * 根据id修改状态信息
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee){
        log.info(employee.toString());

        long empId = (long) request.getSession().getAttribute("employee");
//        employee.setUpdateUser(empId);
//        employee.setUpdateTime(LocalDateTime.now());

        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工消息。。。");
        Employee employee = employeeService.getById(id);
        if (employee == null){
            return R.error("没有找到对应员工信息");
        }
        return R.success(employee);
    }
}
